From a984226f457f849eb9c4ce727eeaa3b5080597d8 Mon Sep 17 00:00:00 2001
From: Muchun Song <songmuchun@bytedance.com>
Date: Mon, 28 Jun 2021 19:37:53 -0700
Subject: [PATCH] mm: memcontrol: remove the pgdata parameter of
mem_cgroup_page_lruvec
All the callers of mem_cgroup_page_lruvec() just pass page_pgdat(page) as
the 2nd parameter to it (except isolate_migratepages_block()). But for
isolate_migratepages_block(), the page_pgdat(page) is also equal to the
local variable of @pgdat. So mem_cgroup_page_lruvec() do not need the
pgdat parameter. Just remove it to simplify the code.
Link: https://lkml.kernel.org/r/20210417043538.9793-4-songmuchun@bytedance.com
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Roman Gushchin <guro@fb.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Xiongchun Duan <duanxiongchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
include/linux/memcontrol.h | 10 +++++-----
mm/compaction.c | 2 +-
mm/memcontrol.c | 9 +++------
mm/swap.c | 2 +-
mm/workingset.c | 2 +-
5 files changed, 11 insertions(+), 14 deletions(-)
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index c193be7607090..f2a5aaba35775 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -743,13 +743,12 @@ out:
/**
* mem_cgroup_page_lruvec - return lruvec for isolating/putting an LRU page
* @page: the page
- * @pgdat: pgdat of the page
*
* This function relies on page->mem_cgroup being stable.
*/
-static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page,
- struct pglist_data *pgdat)
+static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page)
{
+ pg_data_t *pgdat = page_pgdat(page);
struct mem_cgroup *memcg = page_memcg(page);
VM_WARN_ON_ONCE_PAGE(!memcg && !mem_cgroup_disabled(), page);
@@ -1221,9 +1220,10 @@ static inline struct lruvec *mem_cgroup_lruvec(struct mem_cgroup *memcg,
return &pgdat->__lruvec;
}
-static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page,
- struct pglist_data *pgdat)
+static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page)
{
+ pg_data_t *pgdat = page_pgdat(page);
+
return &pgdat->__lruvec;
}
diff --git a/mm/compaction.c b/mm/compaction.c
index 84fde270ae74f..7d41b58fb17c8 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -1028,7 +1028,7 @@ isolate_migratepages_block(struct compact_control *cc, unsigned long low_pfn,
if (!TestClearPageLRU(page))
goto isolate_fail_put;
- lruvec = mem_cgroup_page_lruvec(page, pgdat);
+ lruvec = mem_cgroup_page_lruvec(page);
/* If we already hold the lock, we can skip some rechecking */
if (lruvec != locked) {
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index babbaf49ee368..946a9a483e719 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1199,9 +1199,8 @@ void lruvec_memcg_debug(struct lruvec *lruvec, struct page *page)
struct lruvec *lock_page_lruvec(struct page *page)
{
struct lruvec *lruvec;
- struct pglist_data *pgdat = page_pgdat(page);
- lruvec = mem_cgroup_page_lruvec(page, pgdat);
+ lruvec = mem_cgroup_page_lruvec(page);
spin_lock(&lruvec->lru_lock);
lruvec_memcg_debug(lruvec, page);
@@ -1212,9 +1211,8 @@ struct lruvec *lock_page_lruvec(struct page *page)
struct lruvec *lock_page_lruvec_irq(struct page *page)
{
struct lruvec *lruvec;
- struct pglist_data *pgdat = page_pgdat(page);
- lruvec = mem_cgroup_page_lruvec(page, pgdat);
+ lruvec = mem_cgroup_page_lruvec(page);
spin_lock_irq(&lruvec->lru_lock);
lruvec_memcg_debug(lruvec, page);
@@ -1225,9 +1223,8 @@ struct lruvec *lock_page_lruvec_irq(struct page *page)
struct lruvec *lock_page_lruvec_irqsave(struct page *page, unsigned long *flags)
{
struct lruvec *lruvec;
- struct pglist_data *pgdat = page_pgdat(page);
- lruvec = mem_cgroup_page_lruvec(page, pgdat);
+ lruvec = mem_cgroup_page_lruvec(page);
spin_lock_irqsave(&lruvec->lru_lock, *flags);
lruvec_memcg_debug(lruvec, page);
diff --git a/mm/swap.c b/mm/swap.c
index dfb48cf9c2c9b..18cc9e63515b8 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -313,7 +313,7 @@ void lru_note_cost(struct lruvec *lruvec, bool file, unsigned int nr_pages)
void lru_note_cost_page(struct page *page)
{
- lru_note_cost(mem_cgroup_page_lruvec(page, page_pgdat(page)),
+ lru_note_cost(mem_cgroup_page_lruvec(page),
page_is_file_lru(page), thp_nr_pages(page));
}
diff --git a/mm/workingset.c b/mm/workingset.c
index b7cdeca5a76de..4f7a306ce75a5 100644
--- a/mm/workingset.c
+++ b/mm/workingset.c
@@ -408,7 +408,7 @@ void workingset_activation(struct page *page)
memcg = page_memcg_rcu(page);
if (!mem_cgroup_disabled() && !memcg)
goto out;
- lruvec = mem_cgroup_page_lruvec(page, page_pgdat(page));
+ lruvec = mem_cgroup_page_lruvec(page);
workingset_age_nonresident(lruvec, thp_nr_pages(page));
out:
rcu_read_unlock();
--
2.30.2